"""
打印杨辉三角
"""
def main():
    num = int (input('Number of rows: '))
    yh = [[]] * num
for row in range(len(yh)):
    yh[row] = [None] * (row + 1)
for col in range(len(yh[row])):
    if col == 0 or col == row:
        yh[row][col] = 1
    else:
        yh[row][col] = yh[row - 1][col] + yh[row - 1][col - 1]
    print(yh[row][col],end = '\t')
    print()

if __name__=='__main__':
    main()